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Key Technical Points for Early Spring Field Management of Late-Sown Wheat
Because last year's wheat sowing period around the "National Day" (October 1) encountered heavy rainfall, wheat farmers did not sow until after the Cold Dew solar term, resulting in late wheat; in addition, the rainfall at that time also delayed the growth of wheat sown at the normal time, which also formed late wheat. As a result, more than half of the 1.1 million mu of wheat sown in this city last year was late wheat. The growth characteristics of late wheat differ from those of ordinary wheat, so the early spring management techniques are also different. Late wheat generally refers to wheat sown after the Cold Dew solar term. Its growth characteristics differ from those of wheat sown at the appropriate time, mainly shown as: overwintering seedlings
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Methods to control excessive growth and promote sturdy wheat seedlings: these technical points must be mastered
When wheat seedlings grow excessively before winter, their growth period advances, nutrient accumulation decreases, and cold resistance drops, which is not conducive to safe overwintering. They can be managed by category according to the cause of excessive growth to control vigorous growth and promote sturdiness. 1. Vigorous seedlings formed by too-early sowing: the seedling leaves are slender, tillering is insufficient, and the main stem and some large tillers enter the double-ridge stage before winter. Such wheat seedlings are often vigorous early and weak later, and will be frostbitten in winter when exposed to a low temperature of minus 10°C lasting 5 hours. They should be pressed in a timely manner to inhibit the growth of the main stem and large tillers of the wheat seedlings and control spindly growth. Pressing should be done on a sunny morning; it must not be done when there is frost or dew
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Detailed Explanation of Key Technical Points for Artificial Ovulation Induction in Mullet
(1) Basic Principles Artificial ovulation induction is also called induced spawning. Commonly known as spawning induction, etc. It refers to the use of artificial methods to inject drugs into broodstock fish whose gonads have developed to maturity, stimulating the gonads to further mature and release, thereby obtaining mature eggs (or male fish sperm). Accurately grasping the spawning induction season, selecting broodstock suitable for induced spawning, injecting effective doses within the appropriate temperature range - these are the necessary conditions for artificial induced spawning. Whether the spawning induction technique is appropriate or not affects the fertilization rate of fish eggs, the hatching rate, as well as the spawning success rate and post-spawning
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Detailed Explanation of Fish Roe Processing Methods and Technical Key Points
Before making caviar, fish eggs can be processed into fish roe products. The process is basically the same as that for caviar, except that after the fish eggs are prepared, the roe is not removed but directly subjected to post-processing (post-processing is intended to produce different products such as salted and smoked products). Most fish roe products in the world are preserved by drying or salting. Generally, smoked products must undergo fermentation. That is, after the salted and sun-dried fish eggs are smoked, the separated roe is placed in a barrel, sealed, and stored in a cool environment (13-
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Control Methods and Technical Key Points for Soft-shelled Turtle Diseases
Soft-shelled turtles have strong adaptability and resistance, and diseases rarely occur in farming production; however, improper feeding and management can also lead to disease. Common soft-shelled turtle diseases include: Red Neck Disease, caused by Aeromonas bacteria. The main symptoms are loss of appetite, sluggish movement, red and swollen congested neck that extends and cannot retract, red spots appearing on the abdomen, sometimes floating on the water surface, sometimes crouching on sandy ground. In severe cases, bleeding from the mouth and nose, intestinal inflammation and putrefaction, generalized redness and swelling, cloudy white eyes with blindness, enlarged liver and spleen, and
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Rearing Methods and Technical Key Points for Ground Beetles (Eupolyphaga)
(1) Rearing equipment can be designed according to the scale and purpose of rearing. Here we only introduce the rearing equipment used to provide a source of medicinal insects. ① Insect sieves: their purpose is to separate nymphs of different instars, adults and oothecae by sieving within a certain period, and then rear them separately and isolate the medicinal insect bodies. The sieve apertures are divided into 5 specifications: 2-mesh sieve: used when separating out adults. 4-mesh sieve: used when separating out 7th-8th instar nymphs. 6-mesh sieve: used when separating out oothecae and insect feces. 12-mesh sieve: used when separating out 1st-2nd instar nymphs. 17-mesh sieve
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Key Technical Points for Feeding and Management of Growing-Finishing Pigs
1. For fattening purchased piglets, select healthy piglets of good quality from disease-free areas. After the piglets are brought back, isolate and raise them first. Within 5-7 days, they must not consume excessive feed. After the pigs fully adapt to the environment, switch to normal feeding, and carry out vaccination and parasite deworming work. Those not castrated should be castrated; 2. The growing-finishing barn must be thoroughly cleaned, disinfected and dried before nursery pigs can be moved in; 3. When transferring nursery pigs, group them reasonably. As far as possible, move the original litter or original group into one pen to avoid regrouping
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Detailed Explanation of Key Technical Points for Spring Sowing of Cotton
Determine the density according to variety, soil fertility and planting method, and plant at a reasonable density to achieve full emergence from a single sowing. Generally, for single-cropping spring cotton varieties, the density should be kept at about 3,500 plants per mu, with a row spacing of 1 m and a plant spacing of 19 cm; for semi-spring varieties, the density should generally be kept at about 4,500 plants per mu, with row spacing and plant spacing of 15 cm; for summer cotton varieties, on plots with good fertilizer and water conditions, the density should be kept at about 6,500 plants per mu; on plots with average soil fertility, it should be kept at about 7,500 plants per mu; and on dry, barren, low-yield plots, it should be kept at about 8,000-10,000 plants per mu.
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Key Technical Points for Film-Mulched Transplanting of Cotton after Wheat and Rapeseed
For transplanted cotton following wheat and rapeseed, the transplanting period is late and the growth period is somewhat delayed. Adopting film-mulched transplanting can raise temperature and conserve moisture, prevent waterlogging and drain excess water, and is an effective measure for achieving early vigorous growth, preventing stunted seedlings, and obtaining high yields. Land preparation and film mulching: After harvesting wheat and rapeseed, promptly plow and prepare the land, open furrows and form ridges, spray a soil-closing treatment agent on the ridge surface, and then apply film mulch. Combined with land preparation, apply 2000-4000 kg of decomposed organic fertilizer, 40-50 kg of compound fertilizer, and 1-2 kg of Chilibor (boron fertilizer) per mu. Transplant without delay: the transplanting period for rapeseed stubble must not
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Control Methods and Technical Key Points for Cotton "Double Rot" Disease
Rotten bolls and rotten peaches are common, frequently occurring diseases of cotton that seriously affect cotton yield and quality. People customarily call these two diseases "double rot disease." (1) Causes 1. Excessive or too-late application of nitrogen fertilizer causes excessive cotton growth and a closed, shaded field, which weakens the disease resistance of cotton plants. 2. During the flowering and boll stage, cotton encounters heavy rainstorms or excessive autumn rain, field humidity is too high, and drainage is poor, causing pathogens to breed and invade. 3. Cotton is attacked by red rot, anthracnose, boll blight, and other diseases. (2
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